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Latent variable analysis in hospital electric power demand using non-negative matrix factorization

Author:
García Pérez, DiegoUniovi authority; Díaz Blanco, IgnacioUniovi authority; Pérez García, DanielUniovi authority; Cuadrado Vega, Abel AlbertoUniovi authority; Domínguez González, Manuel
Publication date:
2017
Editorial:

i6doc.com publication

Publisher version:
https://www.elen.ucl.ac.be/Proceedings/esann/esannpdf/es2017-60.pdf
Citación:
ESANN 2017. European Symposium on Artificial Neural Networks, p. 507-512 (2017)
Descripción física:
p. 507-512
Abstract:

Energy disaggregation techniques have recently attracted much interest, since they allow to obtain latent patterns from power demand data in buildings, revealing useful information to the user. Unsupervised methods are specially attractive, since they do not require labeled datasets. Particularly, non-negative matrix factorization (NMF) methods allow to decompose a single power demand measurement over a certain time period into a set of components or “parts” that are sparse, nonnegative and sum up the original measured quantity. Such components reveal hidden temporal patterns and events along this period, related to scheduling events and/or demand patterns from subsystems in the network, that are very useful within an energy efficiency context. In this paper we use this approach on demand data from a hospital during a oneyear period, using a calendar visualization of the components, revealing relevant facts about the energy expenditure

Energy disaggregation techniques have recently attracted much interest, since they allow to obtain latent patterns from power demand data in buildings, revealing useful information to the user. Unsupervised methods are specially attractive, since they do not require labeled datasets. Particularly, non-negative matrix factorization (NMF) methods allow to decompose a single power demand measurement over a certain time period into a set of components or “parts” that are sparse, nonnegative and sum up the original measured quantity. Such components reveal hidden temporal patterns and events along this period, related to scheduling events and/or demand patterns from subsystems in the network, that are very useful within an energy efficiency context. In this paper we use this approach on demand data from a hospital during a oneyear period, using a calendar visualization of the components, revealing relevant facts about the energy expenditure

Description:

ESANN 2017 proceedings, European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning. Bruges (Belgium), 26-28 April 2017

URI:
http://hdl.handle.net/10651/43805
ISBN:
978-287587039-1
Patrocinado por:

Financial support from the Spanish Ministry of Economy (MINECO)and FEDER funds from the EU under grant DPI2015-69891-C2-1/2-R

Id. Proyecto:

DPI2015-69891-C2-1/2-R

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